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1.
Olof Ryding 《Plant Systematics and Evolution》1993,185(1-2):91-97
The two generaPlectranthus andIsodon are compared and found to be very dissimilar.Isodon ist considered to be misplaced inOcimeae subtribePlectranthinae and apparently is more closely related to subtribeHyptidinae. The disjunct genusRabdosiella is compared to these two genera and regarded to be polyphyletic. The AfricanR. calycina (Benth.)Codd is returned toPlectranthus and calledP. calycinus
Benth., while the AsianR. ternifolia (D. Don)Codd is placed inIsodon sect.Pyramidium and calledI. ternifolius (D. Don)Kudo. 相似文献
2.
Mats Wedin 《Plant Systematics and Evolution》1993,187(1-4):213-241
A phylogenetic analysis of the familySphaerophoraceae (Caliciales, lichenized ascomycetes) has resulted in a new generic classification. Notes on character evolution are given. The generaSphaerophorus s. str.,Bunodophoron andLeifidium, gen. nov., are accepted.Pleurocybe andPseudosphaerophorus are considered synonyms ofBunodophoron andThysanophoron is considered synonym toSphaerophorus. The following new combinations are proposed:Bunodophoron coomerense (Ohlsson)Wedin,B. diplotypum (Vain.)Wedin,B. dodgei (Ohlsson)Wedin,B. flaccidum (Kantvilas & Wedin)Wedin,B. formosanum (Zahlbr.)Wedin,B. imshaugii (Ohlsson)Wedin,B. insigne (Laurer)Wedin,B. kinabaluense (M. Satô)Wedin,B. macrocarpum (Ohlsson)Wedin,B. madagascareum (Nyl.)Wedin,B. microsporum (Ohlsson)Wedin,B. murrayi (Ohlsson)Wedin,B. notatum (Tibell)Wedin,B. ohlssonii (Wedin)Wedin,B. patagonicum (C. W. Dodge)Wedin,B. ramuliferum (I. M. Lamb)Wedin,B. scrobiculatum (C. Bab.)Wedin,B. tibellii (Wedin)Wedin,B. whakapapaense (Wedin)Wedin, andLeifidium tenerum (Laurer)Wedin. 相似文献
3.
Othmar Breuß 《Plant Systematics and Evolution》1985,148(3-4):313-315
Verrucaria schaereri (Fr.)Nyl. is accorded generic status asPlacocarpus
Trev. emend.O. Breuss. The main differences between the two genera concern the thallus anatomy and the spores which are halonate inPlacocarpus. The following new combinations are proposed:Placocarpus schaereri (Fr.)O. Breuss andPlacidiopsis cinerascens (Nyl.)O. Breuss. 相似文献
4.
David L. Hawksworth 《Plant Systematics and Evolution》1985,149(3-4):303-307
The nomenclatural history of the generic nameParmeliopsis is reviewed. Its correct citation is found to beParmeliopsis (Nyl. exStizenb.)Nyl., dating from 1866, not 1869 as commonly cited, withP. placorodia (Ach.)Nyl. as holotype species. There is consequently no nomenclatural problem to the adoption ofForaminella
Fricke Meyer, typified byF. ambigua (Wulfen)Fricke Meyer for theParmeliopsis species with falcate conidia. A synopsis of the nomenclature of the North American and European species of both these genera is included. 相似文献
5.
The green algaTrebouxia aggregata (Archibald)Gärtner (Chlorellales) and the procaryotic blue-green alga (cyanobacterium)Gloeocapsa sanguinea (C. Agardh)Kütz. emend.Jaag (Chroococcales) are reported to be the phycobionts inEuopsis granatina (Sommerf.)Nyl. (Lichinaceae). The ultrastructure of the two organisms, studied in the lichen thallus, is described.
Frau Prof. Dr.Elisabeth Tschermak-Woess zu ihrem 70. Geburtstag gewidmet. 相似文献
6.
Four very rare species ofAgaricales of dry grassland of the Galgenberg near Röschitz (Niederösterreich) are described and their taxonomy, affinities, ecology and distribution are discussed.Marasmiellus graminis (Murr.)Sing. & Hausknecht andCrinipellis subtomentosa (Peck.)Sing. var.mauretanica (Mre.)Sing. & Hausknecht are proposed as new combinations;Campanella inquilina
Romagn. apudRedhead is a synonym ofC. caesia
Romagn. 相似文献
7.
Ernst Vitek 《Plant Systematics and Evolution》1982,139(3-4):319-322
The following new hybrids are described:Euphrasia ×dilata = E. hirtella
Jordan exReuter ×alpina
Lam.;Euphrasia ×trikoviana = E. tricuspidata L. ×rostkoviana
Hayne. The chromosome number ofEuphrasia tricuspidata L. has been established for the first time: 2n = 22. 相似文献
8.
C. den Hartog J. Hennen Th. M. P. A. Noten R. J. van Wijk 《Plant Systematics and Evolution》1987,156(1-2):55-59
The chromosome numbers of the five European seagrasses have been determined in material from several sites along the coasts of the Atlantic Ocean, the North Sea and the Mediterranean:Zostera marina L., 2n = 12;Z. noltii
Hornem., 2n = 12;Posidonia oceanica (L.)Delile, 2n = 20;Cymodocea nodosa (Ucria)Aschers., 2n = 14, 2n = 28;Halophila stipulacea (Forsk.)Aschers., 2n = 18. The difference in chromosome morphology betweenZ. marina andZ. noltii supports the division of the genus into two subgenera. 相似文献
9.
T. R. Deason P. C. Silva S. Watanabe G. L. Floyd 《Plant Systematics and Evolution》1991,177(3-4):213-219
Komárek has recently reviewed the various species assigned to the green algal genusNeochloris
Starr (Chlorococcales, Chlorococcaceae) and removed those with uninucleate vegetative cells to a new genus,Ettlia.
Watanabe & Floyd, unaware ofKomárek's work, also reviewed the species ofNeochloris and distributed them among three genera—Neochloris, Chlorococcopsis gen. nov., andParietochloris gen. nov.—on the basis of details of the covering of the zoospore and the arrangement of the basal bodies of the flagellar apparatus. This paper reconciles these two treatments and makes additional recommendations at the ranks of genus, family, order, and class. 相似文献
10.
V. Melzheimer 《Plant Systematics and Evolution》1987,155(1-4):251-256
Silene thebana
Orph. exBoiss. is transferred as a subspecies toS. fabaria (L.)Sm., resulting in the new combinationS. fabaria (L.)Sm. subsp.thebana (Orph. exBoiss.)Melzh. The chromosome count of 2n = 24 is recorded for the first time for this taxon.Dedicated to Prof. DrK. H. Rechinger on the occasion of his 80th birthday, 16th October 1986. 相似文献
11.
J. G. Chmielewski C. C. Chinnappa J. C. Semple 《Plant Systematics and Evolution》1990,169(3-4):151-175
Multivariate analysis of vegetative and reproductive characters was used to examine morphological relatedness amongAntennaria alborosea
A. E. Porsild,A. corymbosa
E. Nels.,A. marginata
Greene,A. microphylla
Rydb.,A. parvifolia
Nutt.,A. rosea
Greene, andA. umbrinella
Rydb. Both pistillate and staminate plants were examined. Some of the characters examined were variable in one species, but stable in another (i.e., presence or absence of papillae on the achenes). Our analyses indicate that the seven species are morphologically distinct. It is hypothesized that theA. rosea agamic complex arose through hybridization amongA. corymbosa, A. microphylla, A. umbrinella, and possiblyA. dioica (L.)Gaertn. However, hybridization between the three former species and others, as well as their subsequent morphological responses to different environmental conditions causes confusion in recognizing the taxa.Antennaria angustifolia
Rydb.,A. arida
E. Nels.,A. confinis
Greene,A. scariosa
E. Nels.,A. foliacea humilis
Rydb.,A. concinna
E. Nels., andA. viscidula
E. Nels. are considered to represent F 1 hybrids. 相似文献
12.
Epiphytes of Paralemanea catenata (Kützing) Vis & Sheath (Rhodophyta) were studied on material from the River Dyje in National Park Podyjí. Longitudinal sections of the thalli were
made with help of Cryo Cut Microtome techniques. The epiphytic cyanophytes Xenococcus kerneri
Hansgirg and Chamaesiphon minutus (Rostafinski) Lemmermann were recognized on the cortex of the thalli. Our observations of the determined species are discussed. 相似文献
13.
The hypothesis ofHenriques andFernandes that several Iberian species ofNarcissus (Amaryllidaceae) are tristylous is reconsidered. Contrary to the opinion ofBateman and most subsequent authors, we believe that the available evidence indicates that some populations ofN. triandrus andN. fernandesii, at least, are tristylous; other populations ofN. triandrus are distylous.Hugonia cf.penicillanthemum (Linaceae) from new Caledonia is distylous, but it remains possible that other species ofHugonia are tristylous. The disputed occurrence of heterostyly in S. African species ofBauhinia (Leguminosae),Cleome (Capparaceae) andAneilema (Commelinaceae), and inAgelaea (Connaraceae) is discussed. 相似文献
14.
U. Meve 《Plant Systematics and Evolution》1995,197(1-4):233-242
A comparison of the West AfricanNeoschumannia
Schltr. and the East AfricanSwynnertonia
S. Moore reveals that the two monotypic genera must be united.Swynnertonia is sunk into synonymy ofNeoschumannia and the new combinationNeoschumannia cardinea (S. Moore)Meve is made for the East African species.Neoschumannia is shown to belong to the tribeStapelieae. The taxon exhibits a very unusual character combination: the growth form of a woody liana is combined with a tripartite corona unique within theAsclepiadaceae. The morphology of the corona suggests a position ofNeoschumannia close to the base of theStapelieae —Ceropegiinae alliance. 相似文献
15.
Bernard Priem Julien Solokwan Jean-Michel Wieruszeski Gérard Strecker Hassan Nazih Henri Morvan 《Glycoconjugate journal》1990,7(2):121-132
The oligosaccharides Man5GlcNAc and Man3(Xyl)GlcNAc(Fuc)GlcNAc presumed to originate fromN-glycosyl proteins have been purified from an extracellular medium (concentration: 2–5 mg/l of 14 day cultures) of white campion (Silene alba) suspension culture. Their primary structures have been determined by1H-400-MHz NMR spectroscopy and FAB-MS spectrometry. They are probably the result of an autophagic process including protein catabolism due to sucrose starvation. Additional identification of digalactosylglycerol (galactolipid breakdown) argues for this hypothesis.Abbreviations Fuc
l-fucose
- Man
d-mannose
- Xyl
d-xylose
- GlcNAc
N-acetyl-d-glucosamine
- Gal
d-galactose
- Glc
d-glucose
- FAB-MS
fast atom bombardment mass spectrometry
- NMR
nuclear magnetic resonance 相似文献
16.
5 new taxa are described and illustrated; their position within the subgenus is discussed:T. hirta
W. Till & L. Hromadnik,T. cotagaitensis
L. Hromadnik,T. caliginosa
W. Till, andT. gilliesii
Baker subsp.polysticha
W. Till & L. Hromadnik are members of a group includingT. myosura
Grisebach exBaker,T. mandonii
E. Morren exMez in DC.,T. retorta
Grisebach exBaker em.Grisebach andT. andicola
Gillies exBaker.
T. brealitoensis
L. Hromadnik is related toT. angulosa
Mez in DC. but distinct and possibly of hybrid origin. 相似文献
17.
Interspecific hybridizations were made between species of theE. semicostatus group, viz.,E. semicostatus (Nees exSteud.)Meld.,E. validus (Meld.)B. Salomon,E. abolinii (Drob.)Tzvel., andE. fedtschenkoi
Tzvel., and species of theE. tibeticus group, viz.,E. pendulinus (Nevski)Tzvel.,E. tibeticus (Meld.)Singh,E. shandongensis
B. Salomon, andE. gmelinii (Ledeb.)Tzvel., as well as among species within theE. tibeticus group. All species are tetraploid (2n = 4x = 28) and possess SY genomes. Meiotic pairing data from 24 hybrids involving 17 interspecific combinations are presented. The average number of chiasmata per cell ranged from 17.91 to 26.20 in hybrids within theE. tibeticus group, compared with 7.26 to 22.04 in hybrids between the two species groups. Despite the extensive collection of cytological data, there was no definite evidence for confirming or disproving the separate existence of the two groups. 相似文献
18.
(1) The ability to produce cephalodia is usually a genus-specific character in lichens. (2)Lecidea shushanii
Thoms., is a member of the genusTephromela, closely related toT. aglaea. It is not clear, whether or not the cephalodia of this taxon are true cephalodia or colonies of epiphytic cyanobacteria and whether or notLecidea shushanii is an independent species. (3)Lecidea dovrensis
Nyl., is, in contrast to the traditional concept, not conspecific withLecidea alpestris
Sommerf., but an earlier name forLecidea pallida
Th. Fr. (4)Lecidea dovrensis is described in some detail. Chemically the species is characterized by the presence of isousnic acid (previously unknown in lecideoid lichens). It is restricted to areas north of the 60th parallel with an oceanic climate. (5) In connection with the attempt to clarify the taxonomic relationships ofLecidea dovrensis, figures of ascus apical structures of the following species are given (marked by an asterisk are genera where we found discrepancies with published data):Austrolecia antarctica, Catillaria chalybeia, Lecidea alpestris, L. caesioatra, L. limosa, Lecidoma demissum, Koerberiella wimmeriana, Micarea assimilata, M. crassipes, M. melaenida, M. prasina, Pilophorus robustus, Placodiella olivacea, Placolecis opaca, Porpidia trullisata, Protoblastenia rupestris, Psilolechia lucida, Psorula rufonigra, Squamarina gypsacea, Xanthopsorella texana. (6) Among crustaceous lichens we find no groups related toLecidea dovrensis. We supportTimal's concept of including this species in the genusPilophorus. Pilophorus, as well asLecidea dovrensis is characterized by the same ascus type, by a similar structure of thallus, cephalodia, paraphyses, and ascocarp (although there is no pseudopodetium developed inLecidea dovrensis), and the presence of isousnic acid. In addition, both taxa are restricted to cool oceanic climates and non-calciferous substrates. The following combination is proposed:Pilophorus dovrensis (Nyl.)Timdal, Hertel & Rambold, comb. nova. (7) The species of theLecidea alpestris-group form an independent genus, probably near toAustrolecia
Hertel.
Frau Prof. Dr.Elisabeth Tschermak-Woess zu ihrem 70. Geburtstag gewidmet. 相似文献
19.
Gérard Strecker Jean-Michel Wieruszeski Claude Martel Jean Montreuil 《Glycoconjugate journal》1987,4(4):329-337
Alkaline borohydride reductive cleavage of hen ovomucin resulted in the release of a series of neutral and acidic oligosaccharide-alditols.1H-NMR spectroscopy in combination with fast ion bombardment-mass spectrometry in negative ion mode were used for investigation of the structures of three oligosaccharide-alditols. The following structures were established:
Abbreviations NeuAc
N-acetyl-d-neuraminic acid
- Gal
d-galactose
- GlcNAc
N-acetyl-d-glucosamine
- Gal-NAc-ol
N-acetyl-d-galactosaminitol
- NMR
nuclear magnetic resonance
- FAB-MS
fast atom bombardmentmass spectrometry 相似文献
20.
Focko Weberling Hermann Lörcher Evelyn Böhnke 《Plant Systematics and Evolution》1980,133(3-4):261-283
TheSimaroubaceae generally have no true stipules. The stipule-like appendages of some genera proved to be pseudo- or metastipules (Weberling & Leenhouts 1965). There seem to be some exceptions, however: the generaCadellia (incl.Guilfoylia) andRecchia on the one hand, and theIrvingioideae on the other. As these taxa, with exception ofRecchia, have simple leaves, there are no indications that their stipule-like appendages might be pseudo- or metastipules. In regard to their position and ontogeny these appendages behave completely like true stipules. Assuming the view ofForman, one could conceive a morphological line from the long, broadly inserted axillary stipules of mostIrvingioideae to the small scaly triangular stipules ofIxonanthoideae. The similarities between the stipules ofIrvingioideae andErythroxylaceae (already emphasized byHallier and others), become even more evident when their ontogeny is investigated. TheIrvingioideae, therefore, might be regarded as a separate family (perhaps with some relation to theErythroxylaceae,Hallier) or as a subfamily ofIxonanthaceae (Forman).—In addition to data on stipules some results on the palynology and shoot anatomy of the generaCadellia (incl.Guilfoylia) andRecchia are reported. Their relationship with theSimaroubaceae also appears doubtful. If they are to be included, they represent a somewhat isolated group near the base of the family which otherwise has lost its stipules.
Herrn Univ.-Prof. Dr.Walter Leinfellner zum 70. Geburtstag gewidmet. 相似文献